Fire-resistant power cables, flame retardant
РВГнг(А)-FRLS, РВГЭнг(А)-FRLS, РПГнг(А)-FRHF, РПГЭнг(А)-FRHF по ТУ BY 500017371.087-2017
PURPOSE
The cables are designed for transmission and distribution of electrical energy in stationary installations for rated alternating voltage 660 and 1000 V, frequency 50 Hz.
Wire brands and their names correspond to those given in the table:
| Cable brand | Cable name |
| РВГнг(А)-FRLS | fire-resistant power cable with copper conductors, with silicone rubber insulation and PVC sheath of low fire hazard, with low gas and smoke emission; |
| РВГЭнг(А)-FRLS | fire-resistant power cable with copper conductors, in a copper foil screen, with silicone rubber insulation and PVC sheath of reduced fire hazard, with low gas and smoke emission; |
| РПГнг(А)-FRHF | fire-resistant power cable with copper conductors, insulated with silicone rubber and sheathed with halogen-free polymer compositions; |
| РПГЭнг(А)-FRHF | fire-resistant power cable with copper conductors, copper foil screen, silicone rubber insulation and sheath made of halogen-free polymer compositions. |
DESIGN
CONDUCTING CORE: copper, single-wire.
INSULATION: ceramic-forming silicone rubber.
TWIST: The insulated cores of multi-core cables are twisted. When twisting five-core cables, insulated cores are located around the cordel. A winding of glass tape is applied over the twisted insulated cores. The twisted insulated cores with glass tape winding for shielded cables are covered with an inner sheath.
SHIELD: over the insulation of single-core cables or over the inner sheath in multi-core cables of the RVGEng(A)-FRLS and RPGEng(A)-FRHF brands, a screen is superimposed in the form of a copper foil winding with a nominal thickness of at least 0.06 mm with an overlap of at least 30%.
SHELL: PVC compound of reduced fire hazard with low smoke and gas emission for RVGng(A)-FRLS and RVGEng(A)-FRLS cables, halogen-free polymer compositions for RPPGng(A)-FRHF and RPGEng(A)-FRHF cables.
NUMBER OF CORE: from 1 to 5.
CORE SECTION, mm2: from 1.5 to 6.
SPECIFICATIONS
The cables are resistant to elevated ambient temperatures up to 50°C.
Cables resistant to low ambient temperatures down to minus 50°C, cables with a sheath made of polymer compositions - up to minus 60°C;
The cables are resistant to high relative air humidity up to 98% at ambient temperature up to 35°С.
Cables are resistant to winding.
Cables do not spread combustion when laid in bundles.
Smoke formation during combustion and smoldering of ng(A)-FRLS cables does not lead to a decrease in the luminous flux in the test chamber by more than 50%.
Fire resistance of cables not less than 180 min.
The limiting temperature of the current-carrying conductors of cables according to the conditions of non-ignition in case of a short circuit is 400 ºС. Short circuit time no more than 5 sec.
The minimum bending radius of cables during laying must be at least ten outer diameters of the cable.
Service life of cables - not less than 30 years.